英文版
1.Anantstartsatthepoint(1,0)ontheunitcircleandwalkscounterclockwiseadistanceof8unitsaroundthecircle.Findthexandycoordinates(accurateto2decimalplaces)ofthefinallocationoftheant.
(x,y)=(,)
2.Findaformula,usingthesinefunction,foryourheighthabovegroundaftertminutesontheferriswheel.Graphthefunctiontocheckthatitiscorrect.
Aferriswheelis22metersindiameterandboardedatgroundlevel.Thewheelcompletesonefullrevolutionevery4minutes.Att=0youareinthethreeo'clockpositionandascending.
h(t)=